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| author | Luis Henriques <lhenriques@suse.com> | 2018-01-05 10:47:20 +0000 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2018-04-02 11:17:52 +0200 |
| commit | cafe21a4fb3075fb2980caba8fdb533a1bdb52b0 (patch) | |
| tree | ccdcecba6b1fb66f93c95032fb2be668e10aa7fe /fs/ceph/dir.c | |
| parent | b7a2921765cf796280baf653a52b22b52e0ba266 (diff) | |
| download | linux-stable-cafe21a4fb3075fb2980caba8fdb533a1bdb52b0.tar.gz linux-stable-cafe21a4fb3075fb2980caba8fdb533a1bdb52b0.tar.bz2 linux-stable-cafe21a4fb3075fb2980caba8fdb533a1bdb52b0.zip | |
ceph: quota: don't allow cross-quota renames
This patch changes ceph_rename so that -EXDEV is returned if an attempt is
made to mv a file between two different dir trees with different quotas
setup.
Signed-off-by: Luis Henriques <lhenriques@suse.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph/dir.c')
| -rw-r--r-- | fs/ceph/dir.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 7d9851cd51bb..1f60498c4631 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -1080,6 +1080,11 @@ static int ceph_rename(struct inode *old_dir, struct dentry *old_dentry, else return -EROFS; } + /* don't allow cross-quota renames */ + if ((old_dir != new_dir) && + (!ceph_quota_is_same_realm(old_dir, new_dir))) + return -EXDEV; + dout("rename dir %p dentry %p to dir %p dentry %p\n", old_dir, old_dentry, new_dir, new_dentry); req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS); |